These are old subtypes that were in the DSM-IV. In the DSM-5, Schizophrenia is now recognized as a
spectrum of different disorders. According to the APA, it was changed because the subtypes
“not helpful to clinicians because patients’ symptoms often changed from one subtype to another
and presented overlapping subtype symptoms, which blurred distinctions among the five subtypes and
decreased their validity.” However, people were diagnosed with the old model of subtypes, so it's
still important information to know in my book. The subtypes were based on what symptoms were predominant.
This had positive symptoms like unreasonable suspicion, paranoia, and hallucinations being the predominant symptoms.
This has symptoms like disorganized speech and behavior and flat/innappropriate affect as the predominant symptoms.
Now considered rare due to it being believed it is the result of untreated schizophrenia. It has catatonia as its predominant symptom.
This is when an individual's symptoms are not predominantly fitting into the three types.
This is when someone is not presently experiencing symptoms like delusions, hallucinations,
disorganized speech and behavior, or catatonic behavior, but at least two of the symptoms are
present to a lesser extent or they experience the negative symptoms of schizophrenia.